What is the origin and significance of the Shri Sai Satcharita as described in its preface?

The Shri Sai Satcharita is a sweet, inspirational, and grace-filled biography of the modern saint, Shri Sachidanand Samarth Sadguru Sai Baba Maharaj. According to Chapter 0, it was authored by the late devotee Shri Govind Raghunath, also known as Annasaheb Dabholkar. This significant work was published chapter by chapter over a span of six years in the Shri Sai Leela magazine before being compiled. The preface notes that, alongside the older Guru Charitra, it is one of only two such detailed Guru biographies known, making it a cornerstone text for devotees.